make media encoding project portable

1 files changed, 32 insertions, 1 deletions

diff --git a/MediaBrowser.Server.Implementations/TextEncoding/TextEncoding.cs b/MediaBrowser.Server.Implementations/TextEncoding/TextEncoding.cs
index c1029dfb5..4c047b7d5 100644
--- a/MediaBrowser.Server.Implementations/TextEncoding/TextEncoding.cs
+++ b/MediaBrowser.Server.Implementations/TextEncoding/TextEncoding.cs
@@ -1,10 +1,18 @@
 using System.Text;
+using MediaBrowser.Model.IO;
 using MediaBrowser.Model.TextEncoding;
 
 namespace MediaBrowser.Server.Implementations.TextEncoding
 {
-    public  class TextEncoding : IEncoding
+    public class TextEncoding : IEncoding
     {
+        private readonly IFileSystem _fileSystem;
+
+        public TextEncoding(IFileSystem fileSystem)
+        {
+            _fileSystem = fileSystem;
+        }
+
         public byte[] GetASCIIBytes(string text)
         {
             return Encoding.ASCII.GetBytes(text);
@@ -14,5 +22,28 @@ namespace MediaBrowser.Server.Implementations.TextEncoding
         {
             return Encoding.ASCII.GetString(bytes, 0, bytes.Length);
         }
+
+        public Encoding GetFileEncoding(string srcFile)
+        {
+            // *** Detect byte order mark if any - otherwise assume default
+            var buffer = new byte[5];
+
+            using (var file = _fileSystem.OpenRead(srcFile))
+            {
+                file.Read(buffer, 0, 5);
+            }
+
+            if (buffer[0] == 0xef && buffer[1] == 0xbb && buffer[2] == 0xbf)
+                return Encoding.UTF8;
+            if (buffer[0] == 0xfe && buffer[1] == 0xff)
+                return Encoding.Unicode;
+            if (buffer[0] == 0 && buffer[1] == 0 && buffer[2] == 0xfe && buffer[3] == 0xff)
+                return Encoding.UTF32;
+            if (buffer[0] == 0x2b && buffer[1] == 0x2f && buffer[2] == 0x76)
+                return Encoding.UTF7;
+
+            // It's ok - anything aside from utf is ok since that's what we're looking for
+            return Encoding.Default;
+        }
     }
 }